An expert was _____ to give a speech on how to learn English well.
What worried the child most was _________ to visit his mother in the hospital.
--How long ___________ each other before they__________ married?--For about a year.
—When__________ and visit our exhibition next month?— When_______, I will let you know.
Michael __________ here to see you and he____________ a note on your desk.
It is a rule in his family that __________ comes home earlier should cook the dinner for the family.